We actually have looked into this in some of the matters in the U.S. I think it's Google that actually runs the computer system that would allow it to work in the United States. My understanding is that it has not been a success, and there are a number of operators that are quite unhappy with it, because the way it works essentially is that you can't plan for your peak spectrum. So how do you know how much to invest in your network when you never know how much spectrum you're going to have in order to service your customers?
It creates a real problem. It essentially forces you back to the equivalent of working in the 900 spectrum or the 2400 spectrum, which is unlicensed, because that's effectively what happens. You are contending constantly for spectrum. When it's not there, great, you have no interference and you can continue to operate. The second there's interference from somebody else, all this is doing is essentially, through dynamic spectrum allocation, is saying, “Okay, one of you gets away with not receiving interference; the other one, however, is off the air” because they didn't get that particular item.